Prices depend on the size of your basement, the type of foundation, how much water comes in, access and local labor costs. The ranges below are general US estimates to help you plan. Your contractor gives you an exact price after looking at your home.
What drives the price: the length of wall that needs drainage, stone or block versus poured walls, finished walls that must be removed, the number of sump pumps, structural repairs, and whether the work is done inside or outside.
Basement Waterproofing
Project
Typical range*
Crack injection (per crack)
$300 – $1,000
Sump pump installation or replacement
$800 – $2,500
Interior drainage system (full perimeter)
$4,000 – $12,000
Exterior excavation & membrane
$10,000 – $25,000+
Sump Pump Installation
Project
Typical range*
Replace an existing sump pump
$600 – $1,500
New pit and pump installation
$1,200 – $3,000
Battery backup system
$800 – $2,000
Foundation Crack Repair
Project
Typical range*
Crack injection (per crack)
$300 – $1,000
Carbon-fiber straps (per strap)
$500 – $1,000
Wall anchors or steel braces (per wall)
$4,000 – $12,000
Crawl Space Encapsulation
Project
Typical range*
Vapor barrier only
$1,500 – $4,000
Full encapsulation
$5,000 – $15,000
Crawl space dehumidifier
$1,500 – $3,000
French Drains & Yard Drainage
Project
Typical range*
Downspout extensions / buried lines
$300 – $2,000
French drain (per linear foot)
$30 – $100
Regrading around the foundation
$1,000 – $5,000
All figures are general estimates for orientation, not quotes.